xref: /linux/fs/proc/cpuinfo.c (revision f86fd32d) 
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/cpufreq.h>
3 #include <linux/fs.h>
4 #include <linux/init.h>
5 #include <linux/proc_fs.h>
6 #include <linux/seq_file.h>
7 
8 __weak void arch_freq_prepare_all(void)
9 {
10 }
11 
12 extern const struct seq_operations cpuinfo_op;
13 static int cpuinfo_open(struct inode *inode, struct file *file)
14 {
15 	arch_freq_prepare_all();
16 	return seq_open(file, &cpuinfo_op);
17 }
18 
19 static const struct proc_ops cpuinfo_proc_ops = {
20 	.proc_open	= cpuinfo_open,
21 	.proc_read	= seq_read,
22 	.proc_lseek	= seq_lseek,
23 	.proc_release	= seq_release,
24 };
25 
26 static int __init proc_cpuinfo_init(void)
27 {
28 	proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
29 	return 0;
30 }
31 fs_initcall(proc_cpuinfo_init);
32